Jane Street group reports 5.3% stake in Riot Platforms (NASDAQ: RIOT)

Rhea-AI Filing Summary

Jane Street Group filings report a shared beneficial ownership stake in Riot Platforms. The filing states a combined beneficial ownership of 20,107,200 shares (5.3%) across affiliated entities, with shared voting and dispositive power over those shares. Subsidiaries listed include Jane Street Capital, LLC, Jane Street Global Trading, LLC, and Jane Street Singapore Pte. Limited.

The cover lists CUSIP 767292105 and the issuer as Riot Platforms, Inc. Principal office address for the issuer is shown as 3855 Ambrosia Street, Suite 301, Castle Rock, Colorado 80109. Signatures are by Jeremy Kahn as authorized signatory dated 05/11/2026.

Insights

Institutional Ownership Analyst

Jane Street reports a passive, shared 5.3% beneficial stake in Riot Platforms.

The filing is a Schedule 13G-style disclosure listing 20,107,200 shares (5.3%) held with shared voting and dispositive power across affiliated entities. The breakdown shows 10,209,130 and 9,893,465 shares held by two principal subsidiaries.

Holdings are presented as shared authority; the filing does not state acquisition method, trading intent, or planned actions. Subsequent filings would be required to show any active changes in position.

Corporate Governance Specialist

Disclosure clarifies attribution and shared control among Jane Street affiliates.

The schedule enumerates subsidiaries that hold or control the reported shares and shows shared voting and dispositive power rather than sole control. The filing follows passive-investor disclosure practice for large holders.

Material implications depend on whether this position is increased or reduced in later filings; the current disclosure itself is administrative and does not indicate activist intent.

Key Figures

Combined beneficial ownership: 20,107,200 shares Percent of class: 5.3% Jane Street Capital holdings: 10,209,130 shares +3 more

6 metrics

Combined beneficial ownership 20,107,200 shares reported beneficially owned (Schedule 13G)

Percent of class 5.3% percent of class beneficially owned

Jane Street Capital holdings 10,209,130 shares beneficially owned by Jane Street Capital, LLC

Jane Street Global Trading holdings 9,893,465 shares beneficially owned by Jane Street Global Trading, LLC

Jane Street Singapore holdings 4,605 shares beneficially owned by Jane Street Singapore Pte. Limited

CUSIP 767292105 Riot Platforms common stock identifier

Key Terms

Schedule 13G, Beneficial ownership, Shared dispositive power, CUSIP

4 terms

Schedule 13G regulatory

"The filing is presented as a Schedule 13G cover disclosure"

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

Beneficial ownership financial

"Item 4(a) Amount beneficially owned: 20,107,200.00"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

Shared dispositive power financial

"Shared Dispositive Power 20,107,200.00 in Item 4"

CUSIP regulatory

"CUSIP Number(s): 767292105 on the cover"

A CUSIP is a nine-character alphanumeric code that uniquely identifies a U.S. or Canadian financial security—such as a stock, bond, or fund share—like a Social Security number for an investment. It matters to investors because brokers, exchanges and record-keepers use the CUSIP to match trades, track ownership, settle transactions and pull accurate records, reducing errors and ensuring money and securities go to the right place.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Riot Platforms, Inc.

(Name of Issuer)

Common Stock, no par value per share

(Title of Class of Securities)

767292105

(CUSIP Number)

05/05/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 767292105

1

Names of Reporting Persons

JANE STREET GROUP, LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 20,107,200.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 20,107,200.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

20,107,200.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

5.3 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

CUSIP Number(s): 767292105

1

Names of Reporting Persons

Jane Street Capital, LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 10,209,130.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 10,209,130.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

10,209,130.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

2.7 %

12

Type of Reporting Person (See Instructions)

BD

SCHEDULE 13G

CUSIP Number(s): 767292105

1

Names of Reporting Persons

Jane Street Global Trading, LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 9,893,465.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 9,893,465.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

9,893,465.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

2.6 %

12

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13G

CUSIP Number(s): 767292105

1

Names of Reporting Persons

Jane Street Singapore Pte. Ltd

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

SINGAPORE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 4,605.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 4,605.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

4,605.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

0.0 %

12

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Riot Platforms, Inc.
(b)	Address of issuer's principal executive offices: 3855 AMBROSIA STREET, SUITE 301, CASTLE ROCK, COLORADO, 80109.
Item 2.
(a)	Name of person filing: Jane Street Group, LLC; Jane Street Capital, LLC; Jane Street Global Trading, LLC; Jane Street Singapore Pte. Limited
(b)	Address or principal business office or, if none, residence: Jane Street Group, LLC 250 Vesey Street 6th Floor New York, NY 10281 Jane Street Capital, LLC 250 Vesey Street 6th Floor New York, NY 10281 Jane Street Global Trading, LLC 250 Vesey Street 6th Floor New York, NY 10281 Jane Street Singapore Pte. Limited 4/F, Ocean Financial Centre 10 Collyer Quay Singapore 049315
(c)	Citizenship: See Item 4 of Cover Page
(d)	Title of class of securities: Common Stock, no par value per share
(e)	CUSIP Number(s): 767292105
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 20,107,200.00
(b)	Percent of class: 5.3%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 0
	(ii) Shared power to vote or to direct the vote: 20,107,200.00
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: 20,107,200.00
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary. Subsidiary Jane Street Capital, LLC Jane Street Global Trading, LLC Jane Street Singapore Pte. Limited
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

JANE STREET GROUP, LLC

Signature:	/s/ Jeremy Kahn
Name/Title:	Jeremy Kahn (Authorized Signatory)
Date:	05/11/2026

Jane Street Capital, LLC

Signature:	/s/ Jeremy Kahn
Name/Title:	Jeremy Kahn (Authorized Signatory)
Date:	05/11/2026

Jane Street Global Trading, LLC

Signature:	/s/ Jeremy Kahn
Name/Title:	Jeremy Kahn (Authorized Signatory)
Date:	05/11/2026

Jane Street Singapore Pte. Ltd

Signature:	/s/ Jeremy Kahn
Name/Title:	Jeremy Kahn (Authorized Signatory)
Date:	05/11/2026

FAQ

What stake does Jane Street report in Riot Platforms (RIOT)?

The filing reports a combined beneficial ownership of 20,107,200 shares (5.3%). The amount is held with shared voting and dispositive power across affiliated entities, as shown on the cover page.

Which Jane Street entities are named as holders of RIOT shares?

The filing lists Jane Street Group, LLC and subsidiaries including Jane Street Capital, LLC, Jane Street Global Trading, LLC, and Jane Street Singapore Pte. Limited. Subsidiaries are identified under Item 7.

Does the Schedule 13G indicate how Jane Street acquired the shares?

No acquisition method is stated. The filing lists beneficial ownership and shared voting/dispositive power but does not describe purchase dates, transaction types, or sources of the shares.

Who signed the filing and when was it signed?

The filing is signed by Jeremy Kahn as an authorized signatory for the reporting entities, with signature dates shown as 05/11/2026 on the document.

What CUSIP and issuer address are shown on the filing?

The filing shows CUSIP 767292105 for Riot Platforms common stock and the issuer address as 3855 Ambrosia Street, Suite 301, Castle Rock, Colorado 80109.